Codejock Developer Community : GdiPlus Registering Race Condition

Codejock Developer Community : GdiPlus Registering Race Condition http://forum.codejock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sun, 19 Apr 2026 05:24:15 +0000 Mon, 10 Sep 2018 13:23:15 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 forum.codejock.com/RSS_post_feed.asp?TID=23703 <![CDATA[Codejock Developer Community]]> http://forum.codejock.com/forum_images/codejock-logo.gif http://forum.codejock.com/ <![CDATA[GdiPlus Registering Race Condition : Yes!It's been my fault......]]> http://forum.codejock.com/forum_posts.asp?TID=23703&PID=77016&title=gdiplus-registering-race-condition#77016 Author: mgampi
Subject: 23703
Posted: 10 September 2018 at 1:23pm

Yes!

It's been my fault...

]]> Mon, 10 Sep 2018 13:23:15 +0000 http://forum.codejock.com/forum_posts.asp?TID=23703&PID=77016&title=gdiplus-registering-race-condition#77016 <![CDATA[GdiPlus Registering Race Condition : Was this problem related to your...]]> http://forum.codejock.com/forum_posts.asp?TID=23703&PID=77015&title=gdiplus-registering-race-condition#77015 Author: Marco1
Subject: 23703
Posted: 10 September 2018 at 1:21pm

Was this problem related to your program?
]]> Mon, 10 Sep 2018 13:21:24 +0000 http://forum.codejock.com/forum_posts.asp?TID=23703&PID=77015&title=gdiplus-registering-race-condition#77015 <![CDATA[GdiPlus Registering Race Condition : Fixed it.Thanks for the help!...]]> http://forum.codejock.com/forum_posts.asp?TID=23703&PID=77005&title=gdiplus-registering-race-condition#77005 Author: mgampi
Subject: 23703
Posted: 05 September 2018 at 6:34am

Fixed it.

Thanks for the help! :)

]]> Wed, 05 Sep 2018 06:34:06 +0000 http://forum.codejock.com/forum_posts.asp?TID=23703&PID=77005&title=gdiplus-registering-race-condition#77005 <![CDATA[GdiPlus Registering Race Condition : Hello,the easiest way would be...]]> http://forum.codejock.com/forum_posts.asp?TID=23703&PID=77004&title=gdiplus-registering-race-condition#77004 Author: mgampi
Subject: 23703
Posted: 05 September 2018 at 5:27am

Hello,

the easiest way would be to implement a sample that uses multithreading and do something like the following all the time until you get into the race condition:

CSampleMarkupView* Wnd_ = new CSampleMarkupView(); //Calls CXTPMarkupDrawingContext::Register(TRUE) -> calls CXTPGdiPlus::Register(TRUE)

// with ASSERT(m_nGdiplusToken == 0 && m_hModule == 0) (XTPGdiPlus.cpp Line 61)

delete Wnd_; //Calls CXTPMarkupDrawingContext::Register(FALSE) -> calls CXTPGdiPlus::Register(FALSE)

/*

XTPGdiPlus.cpp Line 75ff:

m_nCount--;

if (m_nCount != 0)

return;

-----------------> if another thread that wants to call CXTPMarkupDrawingContext::Register(TRUE) interrupts our thread we got an assertion (ASSERT(m_nGdiplusToken == 0 && m_hModule == 0)) in XTPGdiPlus.cpp Line 61

if (m_hModule)

{

// Termination of background thread, which is causing the shutdown problem.

gdiplusStartupOutput.NotificationUnhook(m_nGdiplusToken);

GdiplusShutdown(m_nGdiplusToken);

FreeLibrary(m_hModule);

}

m_hModule = NULL;

m_nGdiplusToken = 0;

*/

using:

class CSampleMarkupView : public CWnd, CXTPMarkupContext {

public:

CSampleMarkupView() : CWnd(), CXTPMarkupContext() {}

virtual ~CSampleMarkupView() {}

};

Best regards

]]> Wed, 05 Sep 2018 05:27:30 +0000 http://forum.codejock.com/forum_posts.asp?TID=23703&PID=77004&title=gdiplus-registering-race-condition#77004 <![CDATA[GdiPlus Registering Race Condition : Hello Martin, how I can reproduce...]]> http://forum.codejock.com/forum_posts.asp?TID=23703&PID=77003&title=gdiplus-registering-race-condition#77003 Author: agontarenko
Subject: 23703
Posted: 05 September 2018 at 3:56am

Hello Martin, how I can reproduce it with our samples?

Regards,

Artem Gontarenko

]]> Wed, 05 Sep 2018 03:56:04 +0000 http://forum.codejock.com/forum_posts.asp?TID=23703&PID=77003&title=gdiplus-registering-race-condition#77003 <![CDATA[GdiPlus Registering Race Condition : Hello,when creating two different...]]> http://forum.codejock.com/forum_posts.asp?TID=23703&PID=77002&title=gdiplus-registering-race-condition#77002 Author: mgampi
Subject: 23703
Posted: 03 September 2018 at 6:07am

Hello,

when creating two different CXTPMarkupContexts both call in their constructor the function CXTPMarkupDrawingContext::Register(TRUE). As this leads to a registering of the CXTPSingleton CXTPGdiPlus 2x sometimes an assertion will be caused, when we got a bad timing.

Can anyone please help me solve this issue by fixing the race condition or telling me if I've used these classes in a wrong way and how to use them correctly?

Thanks for the help in advance.

]]> Mon, 03 Sep 2018 06:07:47 +0000 http://forum.codejock.com/forum_posts.asp?TID=23703&PID=77002&title=gdiplus-registering-race-condition#77002